<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>计算器</title>
		<link rel="stylesheet" href="css/index.css">
		<script src="js/index.js"></script>
	</head>
	<body>
		<div id="outer">
			<div class="screen">
				<div class="showNum"></div>
			</div>
			<div class="buttons">
				<input type="button" value="AC" class="btn1">
				<input type="button" value="<-"/ class="btn1">
				<input type="button" value="+/-" class="btn1">
				<input type="button" value="/" class="btn2">
				
				<input type="button" value="1">
				<input type="button" value="2">
				<input type="button" value="3">
				<input type="button" value="*" class="btn2">
				<input type="button" value="4">
				
				<input type="button" value="5">
				<input type="button" value="6">
				<input type="button" value="+" class="btn2">
				<input type="button" value="7">
				<input type="button" value="8">
				
				<input type="button" value="9">
				<input type="button" value="-" class="btn2">
				<input type="button" value="0">
				<input type="button" value=".">
				<input type="button" value="m">
				<input type="button" value="=" class="btn2">
			</div>
		</div>
	</body>
</html>
